2011 Particle Accelerator Conference - List of Authors (Kubyshin, Yu.A.)

Paper	Title	Page
WEP290	A Novel Electron Gun for Off-axis Beam Injection	2029
	Yu.A. Kubyshin UPC, Barcelona, Spain A.V. Aloev, N.I. Pakhomov, V.I. Shvedunov MSU, Moscow, Russia
	For certain type of electron accelerators injection from an off-axis cathode is required. This is the case of a race-track microtron (RTM), in which the beam passes several times through the accelerating structure, or of a high power standing wave electron linac, for which the lifetime of an on-axis cathode would be strongly reduced by the electron back-bombardment. The standard solution with the beam injection via a dipole magnet from an electron gun placed off-axis is too bulky, moreover in case of RTMs it requires special compensating dipoles. An annular ring cathode gun used in some accelerators leads to large beam emittance and divergence. As a new solution we describe a 3D on-axis electron gun with an off-axis cathode and a central hole for the beam passage. Results of the design optimization and performance of an electron gun built for a miniature 12 MeV RTM for medical applications are presented. We also discuss results of the beam parameters measurements and estimates of the beam emittance.

THP073	Simulations of Emittance Measurement at CLIC	2270
	Yu.A. Kubyshin, H. Garcia UPC, Barcelona, Spain E. Marin, D. Schulte, F. Stulle CERN, Geneva, Switzerland
	A proposal for a CLIC emittance measurement line using laser-wire beam profile monitors is presented. Results of simulations and optimizations are given. Estimates of the impact of beam size as well as statistical and machine-related errors on the measurement accuracy are discussed.

Paper

Title

Page

A Novel Electron Gun for Off-axis Beam Injection

2029

Yu.A. Kubyshin
UPC, Barcelona, Spain
A.V. Aloev, N.I. Pakhomov, V.I. Shvedunov
MSU, Moscow, Russia

For certain type of electron accelerators injection from an off-axis cathode is required. This is the case of a race-track microtron (RTM), in which the beam passes several times through the accelerating structure, or of a high power standing wave electron linac, for which the lifetime of an on-axis cathode would be strongly reduced by the electron back-bombardment. The standard solution with the beam injection via a dipole magnet from an electron gun placed off-axis is too bulky, moreover in case of RTMs it requires special compensating dipoles. An annular ring cathode gun used in some accelerators leads to large beam emittance and divergence. As a new solution we describe a 3D on-axis electron gun with an off-axis cathode and a central hole for the beam passage. Results of the design optimization and performance of an electron gun built for a miniature 12 MeV RTM for medical applications are presented. We also discuss results of the beam parameters measurements and estimates of the beam emittance.

THP073

Simulations of Emittance Measurement at CLIC

2270

Yu.A. Kubyshin, H. Garcia
UPC, Barcelona, Spain
E. Marin, D. Schulte, F. Stulle
CERN, Geneva, Switzerland

A proposal for a CLIC emittance measurement line using laser-wire beam profile monitors is presented. Results of simulations and optimizations are given. Estimates of the impact of beam size as well as statistical and machine-related errors on the measurement accuracy are discussed.